# My name is Pavan Kumpatla and today's date November 23, 2021. # I learned how to use .os and also learned paths and how to use them # I also learned about directories # I had a lot of difficulty since it kept saying error in some things # so I couldn't verify if they worked or not # NOTE:- I'm using deepnote to see if it works here

# NOTE:- I'm using a different platform right now called DeepNote # NOTE:- I thought it might work here but it still says # NOTE:- but this error is a different one.

# ************** DO NOT MODIFY OR ADD ANYTHING TO THIS CODE SEGMENT *********** # ************** Click Edit> Clear All Outputs *********** # ************** This code segment must be run before attempting any of the tasks or examples in this lesson ******************** # ************** This cell is a reset cell to remove (if they exist) the parent_dir and any children or leaves # It prepares the directories and files necessary to run the examples and complete the tasks. # This cell can be run first then all others cells in this notebook can be run, then this cell can be rerun # This is the reset. It uses the import shutil (or shell utility) which you will learn later in the course import os, shutil # shutil = shell utility has an important method called rmtree() # linux does not have an equivalent command! # Navigate to `library` directory (if not already in it) current_path = os.getcwd() print(current_path) if ("content" in current_path): #JGif ("library" in current_path): nb_path = current_path.split("content")[0] # nb_path = the 1st item in the split list else: nb_path = current_path print("Changing working dir to directory above parent_dir") os.chdir(os.path.join(nb_path,"content")) current_path = os.getcwd() print("Current working directory:", current_path) if (os.path.exists('parent_dir') == True): shutil.rmtree('parent_dir') os.mkdir('parent_dir') os.chdir('parent_dir') file_path = "./parent_leaf.txt" f = open(file_path, 'w') f.close() file_path = "./text_file.txt" f = open(file_path, 'w') f.close() os.mkdir('child1_dir') os.chdir('child1_dir') file_path = "./leaf1.txt" f = open(file_path, 'w') f.close() os.chdir('../') os.mkdir('child2_dir') os.chdir('child2_dir') file_path = "./leaf2.txt" f = open(file_path, 'w') f.close() os.chdir('../..') current_path = os.getcwd() print("Current working directory:", current_path)

import sys # imports print(sys.platform) # prints the platform

import os # imports # Change the current working directory to parent dir os.chdir('parent_dir') # changes directory print('Changed working dir to parent: ', os.getcwd()) # prints, gets cwd (current working directory) # Change the current working directory to child1 dir os.chdir('child1_dir') # changes directory print('Changed working dir to child1: ', os.getcwd()) # prints, gets cwd # Change the current working directory back to the parent dir os.chdir('..') # goes back 1 level print('Changed working dir back to parent: ', os.getcwd()) # prints, gets cwd

import os # imports # Print the current working directory (should be "parent_dir") print('The current working directory is:', os.getcwd()) # prints, gets cwd # List the content of the directory (both files and other directories) print('Current directory content: ', os.listdir()) # prints, lists everything in the directory

import os # Print the current working directory (should be "parent_dir") print('The current working directory is:', os.getcwd()) # prints, gets cwd # Create a new directory os.mkdir('new_child') # creates directory print('Created new_child dir') # prints # List the content of the directory print('Current directory content: ', os.listdir()) # prints, lists everything in the directory # Remove the new child directory os.rmdir('new_child') # removes it from directory print('Removed new_child dir') # prints # List the content of the directory print('Current directory content: ', os.listdir()) # prints, lists everything in the directory

import os # Print the current working directory (should be "parent_dir") print('The current working directory is:', os.getcwd()) # prints, gets cwd # Create a new directory os.mkdir('new_child') # creates new directory print('Created new_child dir') # prints # List the content of the directory print('Current directory content:', os.listdir()) # prints, lists everything in the directory # Rename new_child as old_child os.rename('new_child', 'old_child') # renames new_child to old_child print('Renamed new_child as old_child') # prints # List the content of the dir print('Current directory content: ', os.listdir()) # prints, lists everything in the directory # Remove the old_child dir os.rmdir('old_child') # removes old_child print('Removed old_child dir') # prints print('Current directory content: ', os.listdir()) # prints, lists everything in the directory

# [ ] Write a program to: # 1) Prompt the user for a directory name # 2) Create the directory # 3) Verify the directory was created by listing the content of the current working directory # 4) Remove the created directory # 5) Verify the directory was removed by listing the content of the current working directory import os # imports directory_name = input("Type in a name for a directory:- ") # gathers user input and stores it os.mkdir(directory_name) # makes new directory print("Adding Name...") # prints print("Current directory content: ", os.listdir()) # prints, lists everything in the directory os.rmdir(directory_name) # removes directory print("Deleting Name...") # prints print("Current directory content: ", os.listdir()) # prints, lists everything in the directory

# [ ] Write a program to: # 1) Create a directory called "my_dir" # 2) Change the current working directory to "my_dir" # 3) Verify you are in the correct directory by displaying the current working directory # 4) Change the working directory back to the parent directory # 5) Verify you are in the correct directory by displaying the current working directory # 6) Rename "my_dir" to "your_dir" # 7) Verify the directory was renamed by listing the content of the current working directory # 8) Remove "your_dir" # 9) Verify the directory was removed by listing the content of the current working directory os.mkdir("my_dir") # makes new directory os.chdir("my_dir") # changes cwd print("Current directory content: ", os.getcwd()) # prints os.chdir("..") # changes back - I think this is right? Please do tell if it is wrong print("Current directory content: ", os.getcwd()) # prints os.rename("my_dir", "your_dir") # renames print("Current directory content: ", os.listdir()) # prints os.rmdir("your_dir") # removes directory print("Current directory content: ", os.listdir()) # prints

import os, os.path # Print the current working directory (should be "parent_dir") print('The current working directory is:', os.getcwd()) # prints, prints cwd print(os.path) # prints path # Find the absolute path to child1_dir/leaf1.txt abs_path = os.path.abspath("child1_dir/leaf1.txt") # finds absolute path, stores it print("Absolute path to leaf1.txt is: ", abs_path) # prints # Test whether the path exists if(os.path.exists(abs_path)): # if abs_path exists print("Path exists") # prints # Test to see if it's a file or directory if(os.path.isfile(abs_path)): # if abs_file is a file print("It's a file") # prints elif (os.path.isdir(abs_path)): # else if abs_path is a directory print("It's a dir") # prints else: # else print("Path doesn't exist") # prints

# [ ] Write a program that prompts the user for a file or directory name # then prints a message verifying if it exists in the current working directory import os # imports print('The current working directory is:', os.getcwd()) # prints, prints cwd user = input("Type in a name for a file or directory:- ") # gathers user input if os.path.exists(user): # if user exists print(user, "does exist") # prints else: # else print(user, "does not exist") # prints

# [ ] Write a program to print the absolute path of all directories in "parent_dir" # HINTS: # 1) Verify you are inside "parent_dir" using os.getcwd() # 2) Use os.listdir() to get a list of files and directories in "parent_dir" # 3) Iterate over the elements of the list and print the absolute paths of all the directories import os # imports print("The current working directory is:", os.getcwd()) # prints, prints cwd list1 = os.listdir("parent_dir") # gets a list of files and directories in "parent_dir" and stores # I think this is how you do it? for element in list1: # for element in list1 if os.path.exists(element): # if element exists print(os.path.abspath(element)) # prints absolute path # NOTE:- I'm not sure if I did this right.